---
product_id: 468433268
title: "Fiberglass Supply Depot 6 Lb. Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boats, Dock Flotation, Carving, Soundproofing, Filling Voids, and Insulation (1 Gallon Kit)"
brand: "fiberglass supply depot"
price: "€ 260.53"
currency: EUR
in_stock: true
reviews_count: 13
url: https://www.desertcart.nl/products/468433268-fiberglass-supply-depot-6-lb-density-expanding-pour-foam-2
store_origin: NL
region: Netherlands
---

# 1.5 cubic feet coverage per kit 2-part polyurethane for precise mixing 6 lb density for durable, stable foam Fiberglass Supply Depot 6 Lb. Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boats, Dock Flotation, Carving, Soundproofing, Filling Voids, and Insulation (1 Gallon Kit)

**Brand:** fiberglass supply depot
**Price:** € 260.53
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your projects with foam that means business!

## Quick Answers

- **What is this?** Fiberglass Supply Depot 6 Lb. Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boats, Dock Flotation, Carving, Soundproofing, Filling Voids, and Insulation (1 Gallon Kit) by fiberglass supply depot
- **How much does it cost?** € 260.53 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/468433268-fiberglass-supply-depot-6-lb-density-expanding-pour-foam-2)

## Best For

- fiberglass supply depot enthusiasts

## Why This Product

- Trusted fiberglass supply depot brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Rapid Work Cycle:** 45 seconds working time and full expansion in 5 minutes keeps your workflow efficient and on point.
- • **Multi-Use Masterpiece:** Ideal for boats, docks, carving, casting, and filling voids—engineered for pros who demand versatility.
- • **Versatile 2-Part Formula:** Equal parts mix delivers consistent curing, perfect for soundproofing, insulation, and flotation.
- • **Precision Engineered Density:** 6 lb density ensures minimal expansion and maximum structural integrity for demanding projects.
- • **Professional-Grade Compatibility:** Fully cured foam laminates seamlessly with polyester, epoxy, or vinyl ester resins without damage.

## Overview

Fiberglass Supply Depot’s 6 lb density expanding pour foam is a professional 2-part polyurethane kit delivering 1.5 cubic feet of closed-cell foam. Designed for superior durability and minimal expansion, it excels in flotation, soundproofing, insulation, and sculpting applications. With fast curing and compatibility with major resins, it’s the go-to solution for millennial pros seeking reliable, multi-functional performance.

## Features

- Flotation Foam is a polyurethane 2-part foam that, when mixed in equal parts and poured in place this foam will soundproof, insulate, or provide extra buoyancy.
- 6LB. Density polyurethane flotation Foam 1 Gallon Kit; Consists of 1/2 gallon of Part A and 1/2 gallon of Part B and produces 1.5 cubic feet. If you want a high expanding foam look at our 2lb foam. 6lb foam does not expand much from its liqued state.
- Once fully cured this foam can be laminated over with any type of polyester, epoxy or vinyl ester resin without melting.
- The 6LB density also works well in floating decoy or taxidermy applications as well as many other sculpting, casting, carving and other filling applications
- All expansion rates and times given are temperature critical. Temperatures below 75° F will lower the expansion rate therefore requiring more foam. Ideal working temperature is 75° to 80° F or above. Accurate measuring of these products is extremely critical. Working time before foaming: approx. 45 seconds Time before full expansion: approx. 5 minutes

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Asin | B0BBH4XQ9P |
| Best Sellers Rank | #20,039 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #48 in Urethane Adhesives |
| Brand Name | Fiberglass Supply Depot |
| Coverage | 1.5 cubic feet |
| Customer Reviews | 4.4 4.4 out of 5 stars (197) 4.4 out of 5 stars |
| Global Trade Identification Number | 00819794023221 |
| Item Weight | 6 pounds |
| Manufacturer | Fiberglass Supply Depot Inc. |
| Manufacturer Part Number | FBACPOLY6LBGK |
| Material Type | Foam,Resin |
| Model Number | FBACPOLY6LBGK |
| Number Of Items | 1 |
| Number Of Packs | 1 |
| Recommended Uses For Product | Soundproofing, Insulation, Flotation, Filling Voids, Sculpting, Casting |
| Unit Count | 128 Fluid Ounces |

## Product Details

- **Brand:** Fiberglass Supply Depot
- **Global Trade Identification Number:** 00819794023221
- **Material:** Foam,Resin
- **Number of Packs:** 1
- **Recommended Uses For Product:** Soundproofing, Insulation, Flotation, Filling Voids, Sculpting, Casting

## Images

![Fiberglass Supply Depot 6 Lb. Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boats, Dock Flotation, Carving, Soundproofing, Filling Voids, and Insulation (1 Gallon Kit) - Image 1](https://m.media-amazon.com/images/I/61Gi2RbcrRL.jpg)

## Questions & Answers

**Q: could this me used for settng fence posts?**
A: This foam is very strong & it will bond doesn't soak in ground I would not be afraid to use as a fence post filler.

**Q: Will this skin inside a mold? Self skinning without direct air or moisture exposure for casting.**
A: No this will not set up without air

**Q: What is the shelf life of this product?**
A: Approximately 6 months from the manufacture date.

**Q: Will this work for archery targets?**
A: Yes this foam will expand to fill in shot out areas on a foam target you can sand flush once it hardens let it set up for about an hour

## Customer Reviews

### ⭐⭐⭐⭐⭐ Performed exactly as advertised.
*by  on Reviewed in the United States May 2, 2025*

Used this to insulate around a bathtub and it worked great. The foam expanded exactly as expected and provided a solid, supportive fill without over-expanding or creating pressure issues. Once cured, it formed a dense, durable barrier that helps with both insulation and soundproofing. Just be sure to follow the mixing directions carefully and prep your area—it sets fast. Highly recommend for home projects where a strong, stable fill is needed

### ⭐⭐⭐⭐⭐ Exactly what I needed for my project
*by  on Reviewed in the United States June 4, 2026*

Replaced foam under floorboards in my boat and this product worked extremely well.

### ⭐⭐⭐⭐⭐ Very good product.
*by  on Reviewed in the United States July 26, 2026*

Good stuff, There's definitely a learning curve, but that's on me. Using between thin fiberglass sheets (Boston Whaler resto) I appreciate it's ability to maintain some density even when allowed to expand freely, without deforming the skin.

## Frequently Bought Together

- 6 Lb. Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boats, Dock Flotation, Carving, Soundproofing, Filling Voids, and Insulation (1 Gallon Kit)
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- 4 Lb. Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boat and Dock Flotation, Soundproofing, Filling Voids, and Insulation (1 Gallon Kit)

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-08-21*